{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9589556","patent":{"patent_number":"US-9589556","title":"Energy adjustment of acoustic echo replica signal for speech enhancement","assignee":null,"inventors":[],"filing_date":"2015-06-16T00:00:00.000Z","publication_date":"2017-03-07T00:00:00.000Z","cpc_codes":["H04M","H04B"],"num_claims":11,"abstract":"A method for cancelling/reducing acoustic echoes in speech/audio signal enhancement processing comprises using a received reference signal to excite an adaptive filter wherein the output of the adaptive filter forms a replica signal of acoustic echo; the replica signal of acoustic echo is reduced adaptively by multiplying a gain to get a gained replica signal of acoustic echo wherein the gain is smaller in speech area and/or double-talk area than non-speech area; the gained replica signal of acoustic echo is subtracted from a microphone input signal to suppress the acoustic echo in the microphone input signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Energy adjustment of acoustic echo replica signal for speech enhancement","description":"A method for cancelling/reducing acoustic echoes in speech/audio signal enhancement processing comprises using a received reference signal to excite an adaptive filter wherein the output of the adapti","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9589556","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9589556","citation_suggestion":"Patentable. \"Energy adjustment of acoustic echo replica signal for speech enhancement\" (US-9589556). https://patentable.app/patents/US-9589556","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9589556","json":"https://patentable.app/api/llm-context/US-9589556","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:21:54.380Z"}